Preheat Oven:

Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone baking mats.

Cream Butter and Sugars:

In a large mixing bowl, beat the softened butter, granulated sugar, and brown sugar together until light and fluffy.

Add Eggs and Vanilla:

Beat in the eggs, one at a time, followed by the vanilla extract, until fully incorporated.

Combine Dry Ingredients:

In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Add Mix-Ins:

Fold in the dried blueberries, white chocolate chips, and nuts (if using).

Shape the Cookies:

Scoop about 1 1/2 tablespoons of dough for each cookie and roll into balls. Place them on the prepared baking sheets about 2 inches apart.

Bake:

Bake in the preheated oven for 12-15 minutes, or until the edges are golden and the centers look slightly underdone. The cookies will firm up as they cool.

Cool:

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.